Question about traps. Do you create the first trap asap and then kite 1 add in the hope he dies before the adds breaks the trap OR you build the 2 traps before?

Question about Fields: Do you do something special to get rid of the corrupted field faster than having the player with cry of terror only get in there?

we build both traps before using them. trapping one first would probably be a bit less healing if that's an issue.
fields we just stick to whichever one the person gets in first. sometimes another person will go in and cast a couple spells but that seemed to usually cause more problems. you can bop people or have mages ice block in them to stay in longer.

Question about traps. Do you create the first trap asap and then kite 1 add in the hope he dies before the adds breaks the trap OR you build the 2 traps before?

Question about Fields: Do you do something special to get rid of the corrupted field faster than having the player with cry of terror only get in there?

We build both traps, then trap the reavers at the same time. There is usually 2-3 low health windblades that get killed after they start attacking the traps.

Fields:

The very first spawn, we have the player with Cry pick a dissonance field. Once the corrupted one is known, they move to it if they need to. They should be casting the full time in here so that it drops below the second field in health. Pop out for heals as needed.

After the corrupted blows, have the person with cry stand in the remaining one to blow it up.

For the second set of spawns, you'll have a cry debuff come out a long time before you know which one is corrupted. We chose to have this person stay out of a field and used Vampiric Embrace or some other small raid cooldown.

The next debuff goes into the corrupted since you know which one it is at this point.

Search youtube for Carried vs Heroic Grand Empress if you want to see what I'm referring to.